<template>
<div class="login_container">
    <div class="login_box">
        <!-- 头像区域 -->
        <div class="avatar_box">
            <img src="../assets/logo.png" alt="">
        </div>

        <!-- 登录输入框 -->
        <el-form  label-width="0px" class="login_from" :model="loginForm" ref="loginFormRef" :rules="rules">
            <!-- 账号 -->
            <el-form-item prop="username">
                <el-input prefix-icon="el-icon-user-solid" v-model="loginForm.username"></el-input>
            </el-form-item>
            <!-- 密码 -->
            <el-form-item prop="password">
                <el-input prefix-icon="el-icon-s-goods" v-model="loginForm.password" type="password"></el-input>
            </el-form-item>
            <!-- 按钮组 -->
            <el-form-item class="btns">
                <el-button type="primary" @click="login">登录</el-button>
                <el-button type="info" @click="resetLoginForm">重置</el-button>
            </el-form-item>
        </el-form>
    </div>
</div>
</template>

<script>
export default {
  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      rules: {
        username: [
          { required: true, message: '请输入账号', trigger: 'blur' },
          { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'change' },
          { min: 3, max: 6, message: '长度在 3 到 5 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () { // 登录
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return
        const { data: res } = await this.$http.post('login', this.loginForm)

        if (res.meta.status !== 200) {
          this.$message({
            message: '登录失败',
            type: 'warning'
          })
          return
        }

        this.$message({
          message: '登录成功！',
          type: 'success'
        })
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  },
  created () {

  }
}
</script>

<style lang='less' scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}

.avatar_box{
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%,-50%);
    background: #fff;
    img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background: #fff;
    }
}
.login_from{
    position: absolute;
    bottom: 0;
    box-sizing: border-box;
    width: 100%;
    padding: 0 20px;
}
.btns{
    display: flex;
    justify-content: flex-end;
}
</style>
